What's wrong with this drag and drop function, Not touching the arrangement with the component over it?

I am using the drag and drop extension in my card game and I am stuck at this step.
as seen in that video when I drag the next card to the discard field the drag drop blocks work perfectly, but when I am doing the same to my hand nothing happens.

My blocks

when I do (do it) in the blocks page, the action is Executed correctly so that should mean my blocks are correct!

my initial assumption is that I am not dropping at the hand card arrangement because the player is not touching it but touching the picture over it (though the discard field is also made of the same arrangement with a picture the same size over it)! I tried making the picture not clickable, it did not work.

No one can help?

Do not create duplicate topic. Be wait untill some one reply to you